Square base



FIG. 1 shows a front view of the square base;

FIG. 2 shows a left side view of the square base thereof;

FIG. 3 displays a right side view of the square base thereof;

FIG. 4 shows a top view of the square base thereof;

FIG. 5 shows a back view of the square base thereof;

FIG. 6 shows and describes a bottom view with the handle in the base of the square base thereof;

FIG. 7 shows and describes a bottom view with the handle extended from the base of the square base thereof; and,

FIG. 8 shows and describes a front side perspective view of the square base thereof. 

The ornamental design for a square base, as shown. 